1002210020021 has 16 divisors (see below), whose sum is σ = 1147884182784. Its totient is φ = 857163237504.

The previous prime is 1002210020011. The next prime is 1002210020027. The reversal of 1002210020021 is 1200200122001.

It is a happy number.

It is not a de Polignac number, because 1002210020021 - 2²² = 1002205825717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002210019984 and 1002210020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002210020027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5832491 + ... + 6001863.

It is an arithmetic number, because the mean of its divisors is an integer number (71742761424).

Almost surely, 2^{1002210020021} is an apocalyptic number.

It is an amenable number.

1002210020021 is a deficient number, since it is larger than the sum of its proper divisors (145674162763).

1002210020021 is an equidigital number, since it uses as much as digits as its factorization.

1002210020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171220.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1002210020021 its reverse (1200200122001), we get a palindrome (2202410142022).

The spelling of 1002210020021 in words is "one trillion, two billion, two hundred ten million, twenty thousand, twenty-one".